Dissertation > Environmental science, safety science > Processing and comprehensive utilization of waste > Power of industrial waste treatment and comprehensive utilization > Electric Power Industry

Research on Compressive Strength and Reinforcement Mechanism of the Fly Ash Blended with Solidified Agent

Author XinFengYu
Tutor ZhengJianRong
School Fujian Agriculture and Forestry University
Course Forestry Engineering
Keywords solidified agent fly ash compressive strength microstructure reinforcement mechanism
CLC X773
Type Master's thesis
Year 2011
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With the rapid development of economic globalization, countries appeared to varying degrees, lack of resources, the growing problem of environmental pollution, how to reuse the resources to become a rational human beings need to face a difficult problem. And China as a developing country, as a large energy consumption country, the more it is necessary to reuse resources for indepth study and exploration, and adhere to sustainable development. In the 21st century, with the continuous development of social economy, increasing demand for electricity, increasing the amount of burning coal, which led to the rapid growth of fly ash such resources. However, the current use and disposal of fly ash, there were still many problems, such as the use of wet fly ash and fly ash in open dumps and so on. Therefore, how do we fly ash rational use of resources, how to develop efficient, lightweight composite material solidified fly ash, making the recycling of fly ash onto the rationalization, commercialization of the road, is currently facing our country The most pressing issue, but also the future direction of the sustainable development of fly ash.The solidified agent on with particular characteristics was used as a new kind of additive for solidifying fly ash. With the theoretical analysis and experimental measurement method of combining study it. Unconfined compression strength tests were carried out to analyze the effects of solidified agent content and curing period. The variation law of the various components of the solidified fly ash during the formation of strength was discussed on the basis of X-ray Diffraction (XRD) test s of solidified fly ash; scanning electron microscope (SEM) was used to analyze the microstructure formation process and microstructure characteristics of the solidified fly ash; The results showed that:(1) Curing agent mixed with the more compressive strength of solidified fly ash is also a corresponding increase; (2) Curing the longer the age of fly ash, the compressive strength greater; (3) Solidified fly ash content in the curing agent the higher the hydration of cementations materials faster; (4) The type of hydration products and have little content of curing agent, curing agent content on the amount of influence the formation of hydration products.In this paper, Results of analysis on the basic principle of reactions between the fly ash and lime were the basis of the proposed solidified fly ash reinforcement mechanism, Through theoretical analysis and experimental research, we can see that JNS solidified fly ash is a cost effective material, both are technically and economically feasible, low cost, the applicability of strong construction, which fully reflects the waste management, resource re-use social, economic and environmental benefits of unity which provides theoretical and practical foundation for further application of solidified fly ash.

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